I'm stuck on the same things that skullturfq is, particularly #7, since it seems to me that [K] [I] didn't "star" in anything. Unless directing a play counts as starring in it, in which case [N] and [L] could each be multiple things.

These puzzles are a lot of fun. I tried to compose one of my own. It's hard to know whether it's easier than, harder than, or about the same as Bill's.

#1. [B] [D]'s predecessor and successor as [Q] both had the first name [H].#2. [B] [O] and [J] [C] starred in the 1981 comedy [S].#3. Both [A] [M] and [J] [G] [L] had a [T] [Q] with the last name [K].#4. [F] [K] starred in [N] [T].#5. [F] [R] coached the [N] [E].#6. [H] [L] and [G] [O] [A] won Oscars in the 1960s and 1980s respectively.#7. [I] is a country that has both a [P] and a [Q].#8. The flag of [I] consists of three [S].#9. The great-grandparents of [J] [G] [L] came from [I].#10. Two famous Americans have been named [H] [D]; one was [T] [Q] and one was the leader of [P].